A method of controlling Take-All
disease of plants by applying a
fungicide of the formula wherein Z1 and Z2 are C and are part of an aromatic ring which is [
benzothiophene]
thiophene; and A is [selected from] -C(X)-amine [wherein the amine is an unsubstituted, monosubstituted or disubstituted
amino radical]wherein the amine is a monosubstituted or a disubstituted amine, wherein one of the substituents has a cyclic
moiety, said cyclic
moiety which is chosen from the group consisting of thienyl, furanyl, and a non-heterocyclic
substituent, wherein when the amine is disubstituted, the second
substituent is a non-cyclic
substituent, -C(O)-SR3, -NH-C(X)R4, [and] or -C(=NR3)-XR7; B is -Wm-Q(R2)3 or selected from [O-tolyl]o-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with
halogen or R4; Q is C, Si, Ge, or Sn; W is -C(R3)pH(2-p)-; or when Q is C, W is selected from [-C(R3)pH(2-p),[-C(R3)pH(2-p)-, -N(R3)mH(1-m)-, [-S(O)p-,] -S(O)p-, and -O-, X is [0] O or S; n is [0, 1, 2, or 3]2; m is 0 or 1; p is 0, 1, or 2; wherein the two R groups are combined with the
thiophene ring to form a fused ring which is
benzothiophene; each R and R2 is independently defined herein; R3 is C1-C4
alkyl; R4 is C1-C4
alkyl, haloalkyl, alkoxy, alkylthio, alkylamino, or dialkylamino; and R7 is C1-C4
alkyl, haloalkyl, or phenyl, optionally substituted with halo, nitro, or R4; or an agronomic salt thereof.